#object-literal

Answer: Self-references in object literal declarations #development #answer #programming

Self-references in object literal declarations

Is there any way to get something like the following to work in JavaScript?

var foo = { a: 5, b: 6, c: this.a + this.b // Doesn't work };

In the current form, this code obviously throws a reference error since this doesn’t refer to foo. But is there any way to have values in an object literal’s properties depend on other properties declared earlier?

Fixed How can I add a key/value pair to a JavaScript object literal? #dev #it #asnwer

How can I add a key/value pair to a JavaScript object literal?

Here is my object literal:

var obj = {key1: value1, key2: value2};

How can I add {key3: value3} to the object?

Answer: How can I add a key/value pair to a JavaScript object literal?

You could use either of these (provided key3 is the acutal key you want to use)

arr[ 'key3' ] = value3;

or

arr.key3 = value3;

If key3 is a variable,…

How to: How can I add a key/value pair to a JavaScript object literal?

How can I add a key/value pair to a JavaScript object literal?

Here is my object literal:

var obj = {key1: value1, key2: value2};

How can I add {key3: value3} to the object?

Answer: How can I add a key/value pair to a JavaScript object literal?

You could use either of these (provided key3 is the acutal key you want to use)

arr[ 'key3' ] = value3;

or

arr.key3 = value3;

If key3 is a variable,…

How to: How to Loop through JavaScript object literal with objects as members?

How to Loop through JavaScript object literal with objects as members?

How can I loop through all members in a JavaScript object including values that are objects.

For example, how could I loop through this (accessing the “your_name” and “your_message” for each)?

var validation_messages = { "key_1": { "your_name": "jimmy", "your_msg": "hello world" }, "key_2": { "your_name": "billy", "your_msg":…